Symbol member positioning means for calculating machine



Dec- 1, 1964 K. F. OLDENBURG ETAL 3,159,333

SYMBOL MEMBER POSITIONING MEANS FOR CALCULATING MACHINE Original FiledSept. 25. 1961 5 Sheets-Sheet 1 www@ TZN N zwf/f Ewi a/ WQ? v Ik; www .Af Q Mamma/M M MM De- 1 1964 K. F. OLDENBURG ETAL. 3,159,338

SYMBOL MEMBER POSITIONING MEANS FOR CALCULATING MACHINE Original FiledSept. 25. 1961 5 Sheets-Sheet 2 De@ l, 1964 K. F. OLDENBURG ETAL3,159,338

SYMBOL MEMBER POSITIONING MEANS FOR CALCULATING MACHINE Original FiledSept. 25. 1961 5 Sheets-Sheet 3 Dec. l, 1964 K. F. OLDENBURG ETAL SYMBOLMEMBER POSITIONING MEANS FOR CALCULATING MACHINE Original Filed Sept.25. 1961 5 Sheets-Sheet 4 Dec. 1, 1964 K, F, QLDENBURG ETAL. 3,159,338

SYMBOL MEMBER POSITIONING MEANSFOR CALCULATING MACHINE Original FiledSept. 25. 1961 5 Sheets-Sheet 5 Q JI A Q70 f/M 45? mi l w ff 'l l if, l;

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l l Claims. (Cl. ZSS--6il.l8)

y This invention relates to calculating machines and the like and hasyparticular reference to controls for such machines.

A` principal object of the present invention is to providea machine ofthe abovetype which is highly reliable and yet simple and relativelyeasy and economical to manufacture and assemble.

Another object is to provide a machine of the above type in whichdifferent single parts perform a plurality of functions whereby toreduce the total number of parts and cost `of the machine. y

A still further object is to provide a simple and eiective vmeans toprintv symbols representing the types of factors and results printed bya listing machine of the above type.

y vThe manner in which the above and other objects are accomplished willbe readily understood on reference to the following specitcationwhenread'in conjunction with 'the accompanying drawings, wherein:

FIG. l is alongitudinal sectional view of an addinglisting machineembodying a preferred form of the present invention.

FIG. 2 is a perspective viewof the pin carriage.

FlG. 3 is a sectional View illustrating the sector drive mechanism andis taken substantially along the line 3 3 of FIG. 5.

- FIG. 4 is a sideview illustrating the add-subtotal and f thesubtract-total control bars.

FlG. 5 is a sectional plan view illustrating the printing sectors andpartV of the main drive mechanism and is taken substantiallyk along theline S-S of FlG. l.

FlG. 6 is a sectional view taken along the line 6-6 of `ElG., 5illustrating mainly the accumulator control cam andy associatedfollower. y

FIG. 7 is another sectional view through the accumulatory control camand is taken along the line 7-7 of FIG. `ll is a sectional plan view`taken substantially along the line 1lil1 of FIG. l illustrating part ofthe accumulator controls.

FIG. 1G is a sectional plan view taken along the line lbf-lil of FlG.9.V

United States Patent O FlG. lZis a fragmentary view taken in the'direction y i of thearrow 12 in FIG. ll.

This application is a division of the copending applicai tionS.N.l40,547, filed September 2,5,y 1961, for Calculating Machine.

The presentinventionis disclosed as associated with f a ten-keyadding-listing machine.` However, it should be understood that the same,at least in kits broaderaspects,

could be equally/Well associated with other types of ten amountkcys fourof which are shown at 11, which np ICC` keys range in value from 0 to`9. Gperation of the machine to perform y*digit entry and total orsubtotal functions is controlled by an add-subtotal depressible controlbar l2 and a subtract-total barili (FIG. 4). e

Depression of an amount key sets an appropriate stop pin 14 (FIG. l) ina pin carriage, generally indicated at l5, which shifts laterally of themachine into cooperative Lrelation with .combined diierentiall actuatorsand printing sectors le. Each of the latter carries a series of typecharacters 17 on its periphery, ranging from 0 to 9, the character 0being located at the clockwisemost location relative to the rest of theseries.

The sec-tors 16 cooperate with a printing mechanism,

generally indicated at lli, to print amounts registered by the sectors16 onto a paper strip 20. Ther sectors also cooperate with anaccumulator, generally indicated at 2l, to enter `amounts therein or toremove accumulated amounts during totaling and subtotaling operations.

The machine is driven by an electric motor (not shown) through acyclically operable clutch, generally indicated at 22 (FlG. 5), theclutch being effective to drive a main shaft 23 (FIGS. l and 3) onecomplete revolution during each cycle of operation. The shaft Z3 carriesvarious cams, to be described hereinafter, for driving differentoperating units of the machine in proper timed relation. y

The amount keys ll are mounted on key stems 24 (FIG. l) which areslideable'vertically in slots provided in upper and lower key frameplates 25 and 2-6, respectively, forrning part of the framework of themachine.

`Tension springs 27 attached at their endsy to the lower frame plate Zeextend under the key stems to normally Vhold the amount keys in raisedpositions. rSuch springs y extendk across, openings 28 in the plate 26to permit dei pression of the keys.'

Each keyy stem has an extension 29 whichis attached to' the upper endkof a respective flexible cable Stl. The various cables' are verticallyaligned With each other and are slideably mounted for eudwise movementin grooves Elformed in a guide block 32 suitably attached to the lowerframe plate 6.y The various, cables 3) terminate in ank arcuate patternconcentric with a shaft 33 which rotatably supports the sectors lo. Theshaft is rotatably mounted in bearings formed in side frame plates 34and 35 (FIG. 5.) yforming part yof the machine framework.

The pin carriage l5 (FIGS. 1, 2 and 9) is formed of an arcuate body'd ofplastic or the like mounted within an enclosing frame 37. vThe latter isprovided with bearing tabs'33 and 39 at its lower end which areslide-ably mounted on a stationary rod 49 extending across the machineand suitably'supported in frame plates 41 and 42 forming partof themachine framework.

lt willbe noted that the stoppins 14 are arranged in l a plurality ofvertical columns and are located in hori- .nontallrows aligned with thelower ends of the flexible cables 3i). Thus, upon depression of aselected amount vkey 11, the respective cable' 30u/ill be moved endv/iset0 likewise move an aligned stop pin from yits normal ineffectiveposition shown in FIGS. l and 2 to a position wherein it forms anabutment in the path of a shoulder 53 formed on an aligned sector le.

Anadditional row of escapement pins 54, similar to pinsv 14,"are locatedabove the latter pins. Such pins cooperate with a stop shoulder 55 (FlG.l) extending downwardly `from the channel'member, 45 to normallymaintain the pincairiage in its home or any other denominationalposition. The pins 54, are aligned with the various vertical columns ofpins le and arey engageable by a linger 56 of a bail 57 which ispivotally supported at 58 in frame plates 6i) and 6l forming'partof themachine framework for movement about a horizontal axis. The bail y57 ispivotally connected at 62`to a second bail 63 which is pivotallysupported for movement about an axis extending longitudinally of themachine. The bail 63 underlies extensions of the amount keys so thatupon depression of `any thereof the bail will rock bail 57 to depresswhichever escapement pin is aligned with the finger 56.

The pin carriage is urged to the left in FIG. 5 by a tension spring 64(FlG. l1) connected between a part of a bottom frame plate 65 and alever 66 fulcrumed at 67 on the plate 65 and provided with a slot 68which embraces a pin 7i) depending from the pin carriage. Thus, upondepression of any amount key to set an appropriate stop pin 14, thebails 63 and 57 will depress an aligned escapement pin 54, permittingthe pin carriage to escape one column to the next wherein the nextescapement pin 54 Will arrest against the stop shoulder 55.

The various printing sectors 16 are yieldably driven clockwise fromtheir home positions illustrated in FIG. 1 during digitizing andtotaling operations by a bail rod 122. The latter is mounted at itsopposite ends on gear sectors 123 and 124 (FIGS. 3 and 5). The sector124 meshes with a second sector 125 pivoted on a shaft 126 and carryinga roller 127 which engages a cam groove 123 formed in a cam 130 suitablyattached to the drive shaft 23.

The bail rod 122 extends through openings 131 in the various sectors 16and is normally engaged by a detent shoulder 132 formed on a yieldabletail 133 extending integrally with each sector. As the bail rod isrocked clockwise from its home position, it will correspondingly rockthe sectors 14 through engagement with the detent shoulders 132 untilthey strike depressed stop pins 14 in the pin carriage during digitentry operations or until they are arrested by the accumulator duringtotaling and subtotaling operations, whereupon the detenting shoulders132 on the tails 133 will yield, permitting the bail rod to proceed tothe limit of its excursion.

It should be noted at this time that each sector 16 has a pin 129thereon which arrests against a stationary comb plate 134 after thesector has advanced 9 increments.

After the printing phase of a machine cycle, the bail rod 122 will bereturned bythe cam 130 and, in doing so, the frictional engagementbetween the bail rod and the tails 133 will drive the sectors towardtheir zero positions.

As noted heretofore, the sectors 16 cooperate with the printingmechanism 18 to print amounts registered by the sectors onto the paperstrip 20.

The strip 2t) is fed from a supply roll 137, between feed rolls 138 and139, through a guideway 146 and past a printing station located betweenthe sectors 16 and respective printing hammers 141. From such station,the strip is guided upwardly at substantially 90 over a stationary guideplate 142 and behind a transparent tearoff bar 143. It will be notedthat `the strip is dellected upwardly in a relatively sharp bend by thetearof bar.

The hammers 141 are guided for endwise movement at their upper ends inguide slots formed by a cross brace 144 extending between the frameplates 60 and 61. The lower ends ofthe hammers have slots 145 which areguidedover a guide bar 146 also extending between the frame plates 60and 61.

A leaf spring 147 is secured to the underside of the bar 144 and isformed into a plurality of spring fingers at its forward end, eachengaging in a notch 151 in a respective hammer whereby to urge thehammers downwardly toward printing contact with the paper strip.However, the spring fingers are normally prevented from actuating thehammers by a bail 152 pivotally supported on a cross rod 153. The bail152 overlies a cam 154 carried by a rotatable shaft 155.

During the printing phase of the machine cycle, the shaft 155 is rotatedthrough a compiete revolution by suitable means. During such rotation ashoulder 166 on the cam 154 passes one edge of an opening 161 in thebail 152, permitting the spring fingers 156 to impel those harnmers 141,which are otherwise allowed to do so, down- Wardly to effect an imprintof aligned .type characters. Immediately thereafter, the cam 154 iseffective to retract the hammers to their normal upper positions.

A symbol indicating the type of factor or result printed is produced bya special symbol sector 220 (FIGS. 5 and 9). The latter is rotatablymounted on the shaft 33 and is located to the right of the digit pntingsectors 16. The symbol sector 22@ is aligned with the left-hand row ofstop pins 14 in the pin carriage when the latter is in home position,but is not controlled by these pins since, when such a pin is depressed,the pin carriage is concurrently advanced one step to the left to locatethat pin in cooperative relation with the right-hand digit printingsector 16.

The symbol sector has a total symbol type character 221, a subtotal typecharacter 222 and a minus type character 223 thereon, each cooperablewith a special print-.4 ing hammer 224 which is similar in constructionto the printing hammers 141 except that it is provided with a specialledge 225 (FIG. 6), the function of which will be described later.

The symbol sector 22d has two abutment shoulders 226 and 227 thereonspaced both angularly and radially relative to each other.

The shoulder 226 is adapted to arrest against a stop projection 22S onarbail slide 231i (see also FIG. 10) when the pin carriage is in itshome position and when the bail slide is in its illustrated positionrelative to the pin carriage. The bail slide is slideable on the rod 40and is normally held in its position shown in FIG. l0 by a compressionspring 231 extending between the slide and the bearing tab 38 of thepiny carriage.

When a total operation is initiated, as Will be described later, the pincarriage and slide 230 will be in their normal illustrated positionswherein the stop projection 228 is aligned with the symbol sector andaccordingly will block the symbol sector in a position to elect animprint of the total type character 221.

However, when a subtotal operation is initiated, the pin carriage willlikewise be in its home position but depression of the add-subtotal bar12 will have caused its stem 112 (FIGS. 1l and 12) to cam against aninclined edge 232 of a lever 233 fulcrumed at 234, causing its oppositeend to engage a foot 235 on the slide 230, causing the latter to move tothe left in FIG. 10 relative to the pin carriage so that the symbolsector 220 may advance to a position where the shoulder 227 thereofengages a. seecond stop projection 236 on the pin carriage frame 37 (seealso FIG. 2). In this position, the subtotal type symbol 222 will be inposition to effect a printing impression. I

When an add or minus operation is initiated, the pin carriage willobviously be out of its home position wherein both stop projections 228and 236 will be out of alignment with the symbol sector 220 whereuponthe latter will be advanced until the shoulder 226 limits against theedge 237 of the pin carriage frame 37 in which case the minus typecharacter 223 will be located in printing position.

As will be described later, the symbol type hammer 223 is prevented fromoperating during add operations.

The accumulator is meshed and demeshed with the sectors 16 at diierenttimes in a machine cycle depending on whether additive or subtractiveentries are being made or Whether totaling or subtotaling operations arebeing performed.

For this purpose, an accumulator control cam 247 (FIGS. 5, 6, 7 and 8)is attached to the main drive shaft 23. Such cam is provided with threeaxially spaced camways 248, 256 and 251, the camways beingseparated bybroken fianges 252. f

A cam follower bail 253 is mounted on the shaft 126 for both pivotal andlongitudinal movement thereon. A follower nose 2,54 is formed on thebail to follow a p' i o selected camway. The bail is connected throughalpin 4and slot connection 255 with a camming bail 256 also lt willbenoted that the langes 252 are broken at 261 to permit lateral shittingof the follower bail 253 when the machine is in full cycle position.

Means are provided to shift the follower bail 253 into cooperativerelation with any of the camways on the cam 247. "For this purpose, thebail 253 has a depending leg which is engaged by a biturcated lever 262(FlG. ll) pivotaliy supported at 263 and urged counterclockwise by atensioned spring 264i tending to locate the nose 254. of the bail 253 inengagement with the camway 248 of the control cam 247. in such case, theaccumulator would be meshed with the sectors'lo during the return orcounterclockwise rocking movements thereof as occurs during additiveentry operations.

Now, thev aforementioned stud 7l) of the pin carriage is embraced withina slot 265 formed in a blocking plate The latteris slideably mounted`for fore and att movement of the machine on thefbottom frame plate 65through pin andy slot connections 267. When the pin rarriage isy movedinto its right-hand or home position, the stud 7d earns the blockingplate forwardly into its positionshown in FlG. ll, causing an ear 268thereof to cam against an inclined edge 270 on the lever 252, thusmoving the latter into its neutral illustrated position wherein the camfollower bail 253 is positioned in cooperative relation with a centralcamway` 2%. it will be noted on reference to FiG.f6 that the camway 2S@has a high portion extending around the major part of its peripherywhereby to maintain the accumulator in mesh with the sectors 16duringboth the advance and retraction of the latter. This occurs duringsubtotaling operations of the accumulator.

Thus, when no amount has been entered into the pin carriage, i.e., whenthe pin carriage is in its home position, and the add-subtotal bar 12(FlG. 4) is depressed to causefengagement of the clutch 22, a subtotaloperation willfensue.` However, when a amount has been entered into thepin carriage, .e., when the latter is moved out of its homeposition, theblocking plate 26o will be cammed rearwardly of its position shown inFIG. 11 permitting the lever 262 to rock counterclockwise, thus movingthe follower bail 253 into cooperative relation with the camway 246.

The stem M3 (FlG. 11) of the subtract-total bar l?) has a camming edge273:y engageable with the forward end of the klever'2ti2 so that upondepression of the bar the cam follower bail 253 in cooperative relationwith the carnway of the cam 247. As shown in FIG. 8, the camway 251 hasasigh portion so located as to mesh the accumulator with the sectors loduring the early portion of a machine cycle or during advance of thesectors so as to effect a subtractive entry or totaling operation.

Means are provided for preventing printing of a symbol during :additiveentry operations and for this purpose, a lever 275 (FIG. 6) is providedhaving a slot 276 pivotally embracing a frame stud 277. A stud 27S onthe levenrides on a camming surface formed on the camming bail 256.Normally, the stud 278 engages a low portion of the camming surface onvthe bail 256 whereby to locate an ear 279 under the ledge 225 of thesymbol printing hammer 224, thus blocking the same from printing. g

During an add operation, as noted heretofore, the bail 255 will not berocked eountercloclcwise from its position shown inrFIG. 6 untilafterthe' printing operation so that the lever 275 will be eiective toblock'the `there until after the printing operation whereby the high.portion ot' the cammingedge of the bail 256 will become eiectve to holdthe lever 275 clockwise, allowing the hammer 22d to operate inthe samemanner'as the renaming hammers. y

Although4 the invention has been described in detail ,and certainspeciiic terms and languages have been used,

it is to be understood that the present disclosure is illustrativerather than'restrictive and that changes'and modifications maybe madewithout departing from the spirit f or scope of the invention as setforth in the claims appended hereto.rk

l-laving'thus described the invention, what is kdesired is to be securedby United States Letters Patent is:

l. ln a calculating machine, a pin carriage having settable pins; meansfor setting said pins, means for advancing said pin carriage out of homeposition as an incident to setting a said pin, a differentially movablesymbol member, yieldable means for advancing said symboiy member from aninitial symbol .position to a inai symbol position, a nrst stop elementfor normally maintaining said symbol member in said yinitial symbolposition, a second stop element for diterentially limiting advancementof said symbol member to a third symbol position located intermediatesaid initial and iinalsymbol positions, a depressible function controlkey, means responsive toy depression of said key for rendering said f 13the lever 262 will be cammed clockwise to position First stop elementineffective, and means responsive to movement'ot said pin carriage outof said home position for rendering both said stop elements ineffective.

2. In a calculating machine, a pin carriage having settable pins; meansfor setting said pins, means for advancing said pin carriage out of homeposition as an incident to setting a said pin, a diiierentiallyfmovablesymbol member, yieldable means for advancing said symi bolmember from aninitial symbol position, means for invariably limiting movement of saidsymbol member to a ual symbol position, a first stop element fornormally maintaining said symbol member in said initial symbol position,a second stop element for diierentially limiting advancernent of saidsymbol member to a third symbol position located intermediate saidinitial andy inal symbol positions, a depressible function control key,means responsive to depression of said key for rendering said iirst stopeiement inetective, and means responsive to movement of said pincarriage out of said home position for rendering both said stop elementsineffective.

3. ln a calculating machine, a pin carriage having settable pins; meansfor setting said pins, means for advancing said pin carriage out of homeposition yas an incid-ent to setting a said pin, a differentiallymovable symbol member, yieldable means for `advancing said symbol memberfrom an initial symbol position toward a predetermined symbol position,a first stop element opera-y tivelyfconnected to said pin carriage fornormally'maintaining ysaid symbol member in said initial symbol positionwhen said pin carriage is in said home position only, a second stopelement operatively connected to said pin carriage for differentiallylimiting advancement of said symbol member to a third symbol positionintermediate said initial and predetermined symbol positions when saidpin carriage is in said home position only, a depressible functioncontrol key, and means responsive to depression of said key forrendering said first stop element -ineiective, said pin carriagerendering both of said stop elements ineffective upon movement of saidpin carriage out of said home position. n

4. in a calculating machine, a pin carriage having settable pins; meansfor setting said pins, means for ad- 7 vancing said pin carriage ont ofhome position as an incident to setting a said pin, a diiferentiallymovable symbol member, yieldable means for advancing said symbol memberfrom anv initial symbol position to a nal symbol position, a rst stopelement, spring means operatively connected to said pink carriage fornormally causing said first stop element to maintain said symbol memberin said initial symbol position When said pin carriage is in said homeposition only, la second stop element carried by said pin carriage fordifferentially limiting advancement of said symbol member to a thirdsymbol position intermediate said initial Aand final symbol positionswhen said pin carriage is in said home position only, `a depressiblefunction control key, means responsive to depression of said key formoving said rst stop element against said spring means whereby to render@a said rst stop element inellective, said pin carriage being effectivewhen out of said home position to render both said stop elementsineiective, and means operatively connected to said pin carriage forlimiting said symbol member in said iinal symbol position when said pincarriage is out of said home position.

References Cited .in the tile of this patent UNITED STATES PATENTS2,033,045 Mehan Mar. 3, 1936 2,424,359 Liljestrom July 22, 19472,969,176 Anderson Ian. 24, 1961 FOREIGN PATENTS 809,523 Great BritainFeb. 25, 1959

1. IN A CALCULATING MACHINE, A PIN CARRIAGE HAVING SETTABLE PINS; MEANSFOR SETTING SAID PINS, MEANS FOR ADVANCING SAID PIN CARRIAGE OUT OF HOMEPOSITION AS AN INCIDENT TO SETTING A SAID PIN, A DIFFERENTIALLY MOVABLESYMBOL MEMBER, YIELDABLE MEANS FOR ADVANCING SAID SYMBOL MEMBER FORM ANINITIAL SYMBOL POSITION TO A FINAL SYMBOL POSITION, A FIRST STOP ELEMENTFOR NORMALLY MAINTAINING SAID SYMBOL MEMBER IN SAID INITIAL SYMBOLPOSITION, A SECOND STOP ELEMENT FOR DIFFERENTIALLY LIMITING ADVANCEMENTOF SAID SYMBOL MEMBER TO A THIRD SYMBOL POSITION LOCATED INTERMEDIATESAID INITIAL AND FINAL SYMBOL POSITIONS, A DEPRESSIBLE FUNCTION CONTROLKEY, MEANS RESPONSIVE TO DEPRESSION OF SAID KEY FOR RENDERING SAID FIRSTSTOP ELEMENT INEFFECTIVE, AND MEANS RESPONSIVE TO MOVEMENT OF SAID PINCARRIAGE OUT OF SAID HOME POSITION FOR RENDERING BOTH SAID STOP ELEMENTSINEFFECTIVE.